In Canada, the dean of the House () is the sitting Member of the House of Commons with the longest unbroken record of service. The dean is responsible for presiding over the election of the Speaker of the House of Commons at the beginning of each Parliament. The position is the equivalent of the Father of the House in the British House of Commons.
Following a general election, or the resignation or death of the sitting Speaker, the House meets to elect a new Speaker.Election of the Speaker of the House. House of Commons. Canada. March 2006. Last accessed May 17, 2015. This was started in 1986, though Speaker John Bosley presided at the time. The first time the modern election system for speaker was used was in 1994.
During these elections, the Dean of the House takes the role of presiding officer. If the longest-serving member is a Cabinet Minister, party Leader, House Leader or Whip, they cannot act as presiding officer.Election of the Speaker of the House. House of Commons. Canada. March 2006. Last accessed July 1, 2009. In 1994, following the 1993 Canadian federal election, Liberal member Len Hopkins filled this role as his caucus mate Herb Gray, then the longest-serving member, was in Cabinet under Prime Minister Jean Chrétien."Hansard", or Publications of the House of Commons, January 17, 1994, Debates (No. 1). Last accessed May 17, 2015. Although Gray was in cabinet, he was still referred to as Dean both in Hansard and by the press. Gray was also the longest-serving dean of the House up until that point, holding the role for 14 years from 1988 until 2002.
The current dean of the House is Bloc Québécois MP Louis Plamondon, who was first elected to the Commons as a member of the Progressive Conservative Party at the 1984 election. In 2023, Plamondon eclipsed Gray as the longest-serving dean of the House, with 15 years in the role. The second-longest serving MP is currently Liberal Hedy Fry, who has served continuously since the 1993 election. Upon the resignation of Speaker Anthony Rota in 2023, Plamondon served for the sixth time as presiding officer in the election of the Speaker.
The chart below refers to longest-serving members, some of whom served in frontbench roles and, as such, did not preside over the election of the Speaker.
List of longest-serving members Member Party Entered House Became longest-serving member Left HouseYears as an MPYears as Dean John Costigan Liberal-Conservative (until 1906) 1867 June 23, 1896 March 5, 19074011 Liberal (after 1906) John Graham Haggart Conservative 1872 March 5, 1907 March 13, 1913416 Wilfrid LaurierServed as party leader during his tenure as longest-serving member. Liberal1874 March 13, 1913 February 17, 1919456 John D. Reid Conservative 1891 February 17, 1919 December 6, 1921302 William F. MacLean Unionist 1892 December 6, 1921 September 14, 1926345 Rodolphe Lemieux Liberal 1896 September 14, 1926 July 28, 1930344 Charles Marcil Liberal 1900 July 28, 1930 March 22, 1937377 Ernest Lapointe Liberal 1904 March 22, 1937 November 26, 1941374 Arthur Cardin Liberal (until 1942) 1911 November 26, 1941 October 21, 1946355 Independent (after 1942) Charles Gavan Power Liberal 1917 October 21, 1946 July 28, 1955389 William Earl Rowe Progressive Conservative 1925 July 28, 1955 April 8, 1963388 Azellus Denis Liberal 1935 April 8, 1963 February 3, 1964291 Paul Martin Sr.Served as a cabinet minister during his tenure as longest-serving member. Liberal 1935 February 3, 1964 June 25, 1968334 John Diefenbaker Progressive Conservative 1940 June 25, 1968 August 16, 19793911 Walter Dinsdale Progressive Conservative 1951 August 16, 1979 November 20, 1982313 Robert CoatesAlong with Lloyd Crouse. Progressive Conservative 1957 November 20, 1982 November 21, 1988316 Herb GrayServed as a cabinet minister during his tenure as longest-serving member. Liberal 1962 November 21, 1988 January 14, 20024014 Charles Caccia Liberal 1968 January 14, 2002 June 28, 2004362 Bill Blaikie New Democrat 1979 June 28, 2004 October 14, 2008294 Louis PlamondonServed as party leader and interim party leader during his tenure as longest-serving member. Progressive Conservative (until 1990) 1984 October 14, 2008 incumbent41 (as of 2026, and since, April 3, 2024, he is the longest-serving undefeated elected representative in the history of the Canadian Parliamenthttps://lop.parl.ca/sites/ParlInfo/default/en_CA/People/Profile?personId=13090)17 (as of 2025) Bloc Québécois (1990–2018) Québec Debout (2018) Bloc Québécois (2018–present)
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